onStart property

GestureDragStartCallback onStart
read / write

A pointer has contacted the screen and has begun to move.

The position of the pointer is provided in the callback's details argument, which is a DragStartDetails object.

Depending on the value of dragStartBehavior, this function will be called on the initial touch down, if set to DragStartBehavior.down or when the drag gesture is first detected, if set to DragStartBehavior.start.

Implementation

GestureDragStartCallback onStart